The Comparative Dermal Stimulation Potential of Constant-Volume and Constant-Amount Diluted Calcium Hydroxylapatite Injections Versus the Concentrated Form


Botsali A., Erbil H., Eşme P., Gamsizkan M., Aksoy A. O., Caliskan E.

Dermatologic Surgery, vol.49, no.9, pp.871-876, 2023 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 49 Issue: 9
  • Publication Date: 2023
  • Doi Number: 10.1097/dss.0000000000003874
  • Journal Name: Dermatologic Surgery
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, EMBASE, MEDLINE
  • Page Numbers: pp.871-876
  • Lokman Hekim University Affiliated: Yes

Abstract

INTRODUCTIONBiostimulation properties of diluted and hyperdiluted calcium hydroxylapatite (CaHA) injections have become increasingly popular. However, the existing data are insufficient to certify a particular dose-response pattern.OBJECTIVETo assess and compare the dermal stimulation potentials of different concentrations of CaHA injections.MATERIALS AND METHODSTwo independent experiments (Experiment-1: constant injection volume vs Experiment-2: constant CaHA amount) included 4 study groups each, and these experimental groups were placed consecutively on the abdominal skin of a juvenile Yorkshire pig. Histopathological and immunohistochemical stainings were performed on punch biopsy materials collected 4 months after the injection day.RESULTSThe fibroblast count significantly decreased upon dilution from 1:3 to 1:19 in experiment 1 (p =.000) but still higher than the control group. In experiment 1, the collagen density of the concentrated form was more elevated than the 1:19 dilution and the negative control groups (p =.034 and.000, respectively) but similar to the 1:3 dilution (p =.123). No significant difference was observed between the groups regarding collagen density with a standard amount of CaHA (0.2 mL, 30%) (p >.05).CONCLUSIONDespite the efficacy being more pronounced till 1:3 dilution, hyperdiluted CaHA at any dilution ratio up to 1:19 can provide a higher fibroblast count than the negative control group.